Graphics or Processor

[Sheer]

sheer, people have done benchmarks for other mmos, even wow

I'm aware that benchmarks aren't something to blindly follow. As I said:

I really do suggest reading through a few sources you find on Google before making a final decision.

Some MMOs are more dependent on the CPU than the GPU. It depends how optimized the game is for each component. From what I have seen and have found through my own experience, the game is much more reliant on the GPU than it is the CPU. Having a decent GPU and CPU is crucial to any game in general, and there are games that are hugely dependent on your CPU (PlanetSide 2, anyone?), but particularly for ARR, I feel they've smoothed out the optimization for the CPU so well that it would be a better deal to invest in a better GPU than a better CPU.

On top of that... If they do decide to invest in a better CPU, and it turns out they want a CPU that uses, say, requires an AM3+ socket, they may very well have to upgrade their motherboard, since the Phenom II X4 945 requires only an AM3 socket (unless the motherboard is already an AM3+ socket). Glancing over AM3 socket CPUs that would be better... I can't really find any that would be worth investing in unless they upgraded their motherboard to an AM3+ socket.